Trajectory plots

## Warning: Fetching confirmed_incidence_num from jhu-csse for 2021-08-15 to
## 2021-08-15 in geography '*': no results
## Warning: Fetching confirmed_incidence_num from jhu-csse for 2021-08-16 to
## 2021-08-16 in geography '*': no results
## Warning: Fetching confirmed_incidence_num from jhu-csse for 2021-08-15 to
## 2021-08-15 in geography '*': no results
## Warning: Fetching confirmed_incidence_num from jhu-csse for 2021-08-16 to
## 2021-08-16 in geography '*': no results